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  • 1970-1974  (3)
  • Afferent and efferent elements  (1)
  • Chemical Engineering  (1)
  • Chemistry  (1)
  • Glycogen body  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 145 (1973), S. 89-101 
    ISSN: 1432-0878
    Keywords: Glycogen body ; Avian lumbar spinal cord ; Aminergic innervation ; Drug treatment ; Glycogen bioassay ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Mit der Methode von Falck-Hillarp lassen sich im Rückenmark der Vögel Bündel fluoreszierender Nervenfasern nachweisen, die in Höhe des Glykogenkörpers (Lumbalwulst) seitlich an dieses Organ grenzen, von wo aus zahlreiche Fasern in den Glykogenkörper eindringen. Vergleichend-anatomisch gehören die fluoreszierenden Areale des Rückenmarks zu den autonomen Zentren. Es wurde versucht, mit Pharmaka, die das autonome Nervensystem beeinflussen oder Krämpfe erzeugen, das Glykogen des Lumbalwulstes zu mobilisieren (Quantitative Glykogenbestimmung nach Krisman, 1962). Besondere Beachtung verdient die elektronenmikroskopische Feinstruktur der Zwickelräume zwischen den großen Glykogenkörperzellen, wo Ausläufer dieser Zellen und Nervenfasern eng beieinander liegen. Die Kapillaren des Glykogenkörpers werden fast vollständig von Ausläufern seiner Zellen umscheidet.
    Notes: Summary With the method of Falck-Hillarp bundles of fluorescent nerve fibers were observed in the vicinity of the avian lumbar glycogen body. They encompass the glycogen body laterally. Numerous fluorescent fibers penetrate from this border zone into the glycogen. The fluorescent regions of the avian lumbar spinal cord belong to the autonomic centers. Attempts were made to decrease the high glycogen content of the glycogen body by administering drugs which act on the autonomic system, and also by using convulsant drugs. Glycogen was estimated quantitatively by the Krisman method (1962). Electron micrographs show that the triangular spaces between the enlarged cells of the glycogen body are occupied by the processes of these cells and by nerve fibers. The capillaries of the glycogen body are nearly completely ensheathed by the processes of the glycogen-body cells.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 128 (1972), S. 504-511 
    ISSN: 1432-0878
    Keywords: Pineal nerve ; temporaria, Rana Rana esculenta ; Surgical transection ; Fiber degeneration ; Afferent and efferent elements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Mit neurohistologischen Techniken (Nauta-Verfahren) wurde der Anteil des Stirnorgans von Rana temporaria und Rana esculenta an der zentralnervösen Projektion des lichtempfindlichen Pinealkomplexes geprüft. Nach operativer Unterbrechung des Nervus pinealis im dorsalen Lymphsack lassen sich degenerierende Nervenfasern sowohl im Tractus pinealis als auch im stirnorgannahen Stumpf des Nervus pinealis nachweisen. Die ersteren werden als cerebropetale (afferente), die letzteren als zum Stirnorgan ziehende (efferente) Faserelemente gedeutet. Es ist gelungen, die hirnwärts gerichteten Nervenfasern des Stirnorgans bis in die unmittelbare Umgebung des sekretorischen Subcommissuralorgans zu verfolgen; zerfallende Faserfragmente liegen dicht der Basis des Subcommissuralorgans an. Anders als nach Durchtrennung des Tractus pinealis (vgl. Paul, Hartwig und Oksche, 1971) ließen sich nach Unterbrechung des Nervus pinealis keine Degenerationszeichen im mesencephalen „Zentralen Grau“ darstellen.
    Notes: Summary The contribution of the frontal organ of Rana temporaria and Rana esculenta to the central nervous projections of the light-sensitive pineal complex has been investigated with neurohistological techniques (Nauta-method). After surgical transection of the pineal nerve within the dorsal lymph sac, degenerating nerve fibers have been observed within the pineal tract and also in the proximal stump of the pineal nerve. Those in the pineal tract have been interpreted as cerebropetal (afferent) connexions of the frontal organ, and those in the pineal nerve as fibers directed towards the frontal organ (efferent elements). The cerebropetal fibers of the frontal organ have been traced to the subcommissural region where they degenerate in close juxtaposition with the secretory subcommissural organ. In contrast to the findings obtained after transection of the pineal tract (see Paul, Hartwig and Oksche, 1971), no degenerating fibers have been observed in the mesencephalic central grey after surgical interruption of the pineal nerve.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 14 (1974), S. 273-275 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Two series of glass-reinforced diallyl phthalate molding compounds from two different manufacturers were evaluated using a Rheometrics, Inc. Mechanical Spectrometer and a Brabender Torque Rheometer. Comparison of reactivity and minimum viscosity as measured by these two instruments is presented. The Mechanical Spectrometer appears capable of differentiating smaller changes in melt viscosity than does the Brabender Torque Rheometer.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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